This is wonderful, and go Northwestern! But all that jazz aside what stops the molecules from moving when the tissue reaches its peak state? A collapse due to a depletion of one of its parts!? Also I am not a biologist/chemist, but if someone could put some input in here that'd be great. Is it that the molecules act as "invaders" and signal the body itself where to hyper-focus healing? But that there's the added bonus of holding a necessary chemical needed to repair tissue/bones. In turn the amount injected would denote the lifespan of the molecules. Because you'd inject the amount necessary to repair x-damage? Not sure, but just kind of how I figured it would work.